%%
%% The LaTeX Companion, 3ed
%%
%% Example 6-9-8 on page I-503 in "Spanning cells".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}

%StartShownPreambleCommands
\usepackage{keyvaltable,Alegreya,AlegreyaSans}
\NewKeyValTable[headformat=\sffamily]{MultiCol}
   { penny: align=c|, format=\bfseries; euro: align=l|; cent: }
%StopShownPreambleCommands

\begin{document}
\begin{KeyValTable}{MultiCol}
  \Row{euro=\multicolumn{1}{r|}{2}, cent=3, penny=1}
  \Row[format!=\sffamily]{penny=1, cent=3, euro=2}
  \Row{penny=1, euro=\multicolumn{2}{c}{\color{blue}2+3}}
  \Row{cent=3, penny=\multicolumn{2}{c|}{1+2}}
  \Row[format=\itshape]{penny=\multicolumn{3}{c}{1+2+3}}
  \Row{cent=3, euro=2, penny=1}
\end{KeyValTable}
\end{document}